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<h3 class="section">2.10 Dependency Tracking: <samp><span class="option">--MD</span></samp></h3>
<p><a name="index-g_t_002d_002dMD-81"></a><a name="index-dependency-tracking-82"></a><a name="index-make-rules-83"></a>
<samp><span class="command">as</span></samp> can generate a dependency file for the file it creates. This
file consists of a single rule suitable for <code>make</code> describing the
dependencies of the main source file.
<p>The rule is written to the file named in its argument.
<p>This feature is used in the automatic updating of makefiles.
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